Edinburgh City overtook managerless Clyde and moved seven points clear of opponents Cowdenbeath by winning 2-1 at Central Park.
Clyde lost 2-1 at Montrose, while Stirling Albion beat promotion hopefuls Elgin City 1-0.
Montrose are now five points off fourth-placed Annan Athletic and nine behind Elgin.
City are ahead of Clyde on goal difference but have played two more games than the bottom two sides.
Dale Carrick fired Cowdenbeath in front against Edinburgh, who were level by the 17th minute through Dougie Gair's penalty following Liam Henderson's foul on Joe Mbu.
Josh Walker's strike in the second half put City ahead and Cowden then had Fraser Mullen sent off.
At Forthbank Stadium, Stirling and Elgin were tied at 0-0 until Sean Dickson struck in the third minute of stoppage time.
Clyde, playing their first match since manager Barry Ferguson's resignation, fell behind to Kerr Hay's early strike and Greg Pascazio fired Montrose's second.
Peter MacDonald pulled one back for Clyde after the break.